Used as an intermediate in the synthesis of pharmaceutical compounds, particularly in the production of antiviral drugs such as those for HIV and HCV. It serves as a chiral building block in the development of protease inhibitors, where the hydroxyl and carbamate functional groups allow for selective chemical modifications. Its cyclopropyl and tert-butoxycarbonyl (Boc) protecting group combination helps stabilize the molecule during multi-step syntheses and enables controlled deprotection under mild conditions. Commonly employed in the preparation of active pharmaceutical ingredients (APIs) requiring high enantiomeric purity.